The tank is a 50 gallon.
It is heavily planted, but the front half is quite open as it's mostly carpeting plants there.
The back is planted to the top.
For hiding, it would mostly be in the plants or in a pile of rocks where they can get into the cracks
The Betta was calmer days 1 and 2 but today the aggression has really picked up, hence my questioning the gender. I'm hoping this is a temporary thing and it may calm back down, is this something Bettas do? If it stays this aggressive, I don't think it can stay in the tank.